The drone flies a predefined route and takes overlapping pictures of the area that is to be measured. This way data is generated for high-resolution and high-accuracy orthopictures , 3D models and point clouds. Sand heaps, landfills, stone quarries, mining sites, agricultural land,… are precisely measured and mapped. The gathered information will be used for volume calculation, project planning (eg road works, sewer works, etc). Orthopictures taken at different points in time are compared, allow to show the progression of a project.